*{
    margin: 0;
    padding: 0;
}
.bttom{
    width: 100%;
    height: 100%;
}
.navigation_bar{
    width: 100%;
    height: 56px;
    background: orange;
}
.nav{
    width: 1200px;
    height: 56px;
    margin: auto;
}
.logo{
    width: 120px;
    height:20px;
    line-height: 56px;
    vertical-align: center;
    margin-left: -100px;
    float: left;
}
.logos{
    width: 120px;
    height:20px;
}
.navigation{
 height: 56px;
 margin-left: 200px;
 
}
.list{
    height: 36px;
    list-style: none;
    text-overflow: clip;
    float: left;
}
.list li{
    float: left;
    line-height: 56px;
    font-size: 14px;
    padding: 0 24px;
}
.list li a{
    width: 100%;
    height: 56px;
    text-decoration: none;
    color: black;
    text-align: center;
}
.list li:nth-child(1){
    font-weight: 800;
}
.list li:nth-child(2){
    position: relative;

}
.list li:nth-child(2):hover .hide{
display: block;

}
.list li:hover{
    background-color: black;
}
.list li:hover a{
    color: yellow;
}

.hide{
    position: absolute;
    z-index:2;
    top:56px;
    left: 0px;
    display: none;
    margin-left: -30px;
  
}
.hide_ul{
    margin-left: 30px;
    background: blanchedalmond;
  
}
.hide_ul li{
    width: 40px;
    height: 30px;
    padding: 0 20px;
    list-style: none;
    border-radius: 10px;
    overflow: hidden;
    line-height: 30px;
    text-align: center;
    font-size: 16px;
    font-weight: 400;
    margin-top: 10px;
  
}
.hide_ul li:nth-child(1){
    font-weight: 400;
    margin-left: 30px;
}

.hide_ul_li{
 margin: 0 -30px;

}
.hide_ul .hide_ul_li_Line{
    width:800px;
    height: 1px;
    border-style: 1px solid black;
    background-color: black;
}
.hide_ul .hide_ul_li_a{
    width: 80px;
    height: 30px;
    padding-bottom: 10px;
    font-size: 16px;
   margin-right: 60px;
   margin-top: -38px;
}
.hide_ul .hide_ul_li_a:hover {
    background: none;
}
.hide .hide_ul .hide_ul_li_a a{
    color: black;
}
.hide_ul .hide_ul_li_font{
   width: 72px;
}
.hide_ul .hide_ul_li:hover{
    display: block;
    background: none;
}
.hide_ul li:hover{
background: orange;
}
.hide .hide_ul li:hover a  {
    color: lightcoral;

}
.position{
width: 30px;
height: 56px;
position: relative;
}
.position:hover .drop_down_menu{
    display: block;
  
}
.drop_down_menu{
    float: left;
    display: none;
    position: absolute;
    z-index:2;
    overflow: hidden;
    top:56px;
    left: 0px;
    width: 194px;
    background: blanchedalmond;
    border-radius:0 0 10px 10px ;
   
}
.drop_down_menu .content{
    height: 100%;
}
.drop_down_menu .content dt{
height: 35px;
line-height: 35px;
font-size:16px;
margin-top: 5px;
padding-left: 24px;
margin-bottom: 10px;
}
.drop_down_menu  .content dt:hover {
    height: 35px;
    line-height: 40px;
    background: orange;
}
.drop_down_menu  .content:hover dt{
    padding-left: 24px;
}

.position:nth-child(5) ,
.position:nth-child(7){
    width: 58px;
}
.search,.download{
    width: 60px;
    height: 56px;
    line-height: 56px;
    float: left;
    text-align: center;
   
}
.search{
    margin-left: 190px;  
}
.search span,.download span{
    font-size: 25px;
}
.search:hover,.download:hover{
    background: black;
    color: yellow;
}
.sign{
   position: relative;
    
}
.sign li{
    list-style: none;
    position: absolute;
    top:-38px;
}
.sign li:nth-child(1) {
    width: 49px;
    height: 56px;
    right: -80px;
    margin: 0 20px;
}
.sign li:nth-child(2) {
    right: -60px;
}
.sign li:nth-child(3){
    width: 38px;
    height: 56px;
    right: -100px;
}
.sign li a{
    width: 20px;
    text-decoration: none;
    color: black;
}
/*轮播图 */
#container{
    border: 2px solid #ddd;
    border-radius: 10px;
    width: 1200px;
    height: 350px;
    margin: 50px auto;
    position: relative;
    overflow: hidden;
    margin-top: 20px;
  
}
#prev_btn,#next_btn{
    width: 60px;
    height: 60px;
    background: rgba(39, 39, 39, .7);
    display: inline-block;
    border-radius: 50%;
    line-height: 60px;
    text-align: center;
    font-size: 30px;
    color: #fff;
    position: absolute;
    top: 143px;
    left: 15px;
    z-index: 999;
    cursor: pointer;
    font-weight: 200;
}
#prev_btn:hover,#next_btn:hover{
    color: yellow;
}
#next_btn{
    position: absolute;
    top: 143px;
    left: 1120px;
}
#prev_btn {
    margin: 7px 5px 0 0;
    width: 65px;
    height: 65px;
    font-size: 55px;
}
#next_btn {
    margin: 7px 0 0 0px;
    width: 65px;
    height: 65px;
    font-size: 55px;
 
}
#banner_container{
    position: absolute;
    width: 8280px;
}
#banner_container li{
    list-style: none;
    float: left;
    width: 1380px;
    height: 350px;
}
#banner_container li img{
    width: 1380px;
    height: 350px;
}
.Tabular_chart{
    width: 1200px;
    height: 360px;
    background: orange;
    margin: auto;
    margin-top: -30px;
}
.Tabular_chart_dl dd{
  float: left;
}
.Tabular_chart_dl dd:nth-child(2){
    margin-left: 17px;
    margin-right: 9px;
}
.Tabular_chart_dl dd:nth-child(3){
 margin: 0 9px;
}

.Tabular_chart_dl dd:nth-child(4)
{
    margin-left: 9px;
    margin-right: 17px;
} 

.Tabular_chart_dl img{
    width: 226px;
    height: 214px;
}
.text{
   width: 300px;
    font-size: 20px;
    margin: auto;
}
.text dd{
    float: left;
    font-size: 20px;
    margin: 80px 35px 0;
}
.text dd:nth-child(1){
    font-weight: 800;
    border-bottom: 2px solid black;
}
.text dd:nth-child(2):hover{
    font-weight: 200;
    color: lavender;
    border-bottom: 2px solid black;
}
.Detailed_drawing{
    width: 1200px;
    height: 100%;
    margin: auto;
    overflow: hidden;
    background: #ccc;
    margin-bottom: 20px;
  
}
.Small_picture{
    width: 1200px;
}
.Small_picture_img img{
    width: 226px;
    border-radius: 5px 5px 0 0;
}
.li_font{
    width: 196px;
    height: 100px;
    padding:11px 16px 13px;
}
.aa{
    width: 226px;
    height: 350px;
    float: left;
    margin-top: 20px;
    background: #fff;
    margin-left: 12px;
    border-radius: 5px;
}
.feedback{
    display: flex;
    margin-top: 17px;
    margin-bottom: 13px;
}
.feedback dt{
  font-size: 14px;
  margin-left: 10px;
}
.address{
    border-top:1px solid #ccc ;
}
.address dl{
    margin-top: 20px;
}
.address dl img{
    width: 24px;
    height: 24px;
    margin-left: 16px;
}
.address dl dt{
    height: 24px;
    line-height: 24px;
    float: left;
    margin-left: 10px;
    font-size: 12px;
    margin-right: 14px;
}
.address dl dt:nth-child(3){
    color: #ccc;
}
.address dl dt:nth-child(2):hover{
 color: lightcoral;
}
.paging{
    width: 1200px;
    height: 50px;
    margin: auto;
}
.paging ul{
    width: 660px;
    margin: auto;
}
.paging ul li{
    float: left;
    width: 40px;
    height: 40px;
    list-style: none;
    margin: 0 5px;
    line-height: 40px;
    border-radius: 5px;
    margin-top: 30px;
    text-align: center;
    background: #ccc;
}
.paging ul li:nth-child(1){
    background: orange;
}
.paging ul li:hover{
    background: orange;
}
.paging ul li:nth-child(8){
    background: #ccc;
}
.Long_graph{
    width: 1200px;
    height: 86px;
    margin: auto;
   
}
.Long_graph img{
    width: 1200px;
    margin-top: 20px;
    margin-bottom: 20px;
    border-radius: 10px;
    float: left;
}
.replace{
    width: 1200px;
    height: 30px;
    margin: auto;
    margin-bottom: 80px;
}
.replace span{
    width: 100px;
    height: 30px;
    color: #ccc;
}
.replace span:nth-child(2){
    float: right;
    color: lightcoral;
}
.Base_map{
    width: 1200px;
    height: 200px;
    margin: auto;
    background: #ccc;
    border-radius: 5px;
    margin-bottom: 50px;
}
.Base_map_img{
    float: left;
    margin-left: 12px;
}
.Base_map_img img{
    width: 226px;
    height: 150px;
}
.Base_map_img p{
    width: 226px;
    height: 50px;
    line-height: 50px;
    text-align: center;
}
.Base_map_img p:hover{
    color: lightcoral;
}
.lost{
    width: 100%;
    height: 286px;
    margin: auto;
    background:gray;
    color: silver;
}
.content{
    width: 1200px;
    height: 286px;
    margin: auto;
}
.content ul{
    padding-top: 74px;
}
.content ul li{
    float: left;
    font-size: 14px;
    margin-right: 24px;
    list-style: none;
}
.content p{
  margin-top: 80px;
    border-bottom: 1px solid #ccc;
}
.information ul li{
    font-size: 10px;
}
